CN104574706A - Handheld POS system used for wireless meter reading - Google Patents
Handheld POS system used for wireless meter reading Download PDFInfo
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- CN104574706A CN104574706A CN201510038149.3A CN201510038149A CN104574706A CN 104574706 A CN104574706 A CN 104574706A CN 201510038149 A CN201510038149 A CN 201510038149A CN 104574706 A CN104574706 A CN 104574706A
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Abstract
The invention provides a handheld POS system used for wireless meter reading, and relates to the technical field of communication. According to the handheld POS system used for wireless meter reading, a data partitioning mode is adopted, the length of a to-be-transmitted data package is identified, and therefore the length of the data package is judged; as the longer the data package is, the higher the packet loss probability is, the data package with the excessively-large data length needs to be partitioned into a plurality of sub-data packages to be transmitted, even though one certain sub-data package is lost, the sub-data package only needs to be retransmitted, and receiving of data in other parts of the data package cannot be influenced, the packet loss probability of the overall data package is accordingly reduced, and the communication quality is improved.
Description
Technical field
The present invention relates to communication technical field, in particular to the handheld POS machine system for radio meter register.
Background technology
Be unable to do without consumption to resources such as water, gas and electricity in daily life, the water yield that the water meter in family and gas meter consume family and tolerance Auto-counting, to form water energy, the gas consumption total amount of this family in certain a period of time.The difference of the result that water conservancy company and natural gas companies were checked meter according to the last time and this result of checking meter calculates water energy, gas consumption in a period of time, and then determines charge according to unit price.
Current domestic residential quarter user's counting cost by gas meter mode mainly contain the person of checking meter visit manual to check meter, the person of checking meter hold POS visit check meter, IC-card table etc.Although IC-card table solves charging problem preferably, unresolved problem of checking meter, a lot of enterprise still has to, and arranging manually visits checks meter.The person of checking meter visits the cycle of checking meter be bimester or many months, need to drop into a large amount of human and material resources, and real-time property is poor, is difficult to the consumption Changing Pattern according to meter reading data analysis client and supply and marketing rate.Along with the growth of urban population, the increase of skyscraper, and the increase of housing vacancy rate, the workload of checking meter of manually visiting increases day by day, and operation management expense progressively increases, and is easy to occur that leakage is copied, estimate the problem of copying.In addition, resident's privacy aware is more and more stronger, checking meter and producing conflicts gradually, disliking visiting, also making visits check meter more and more difficult.Under this background, wireless long-distance meter-reading technology is arisen at the historic moment, and rises at home.
Wireless long-distance meter-reading and payment system refer to the system wirelessly realizing subscriber's meter meter action control and information acquisition.As shown in Figure 1, system is by compositions such as remote meter reading and pre-payment management software (being called for short management system, the webserver 11), telecommunication middleware, wireless long-distance meter-reading collector (being called for short collector 14, for obtaining the reading of table meter 15), wireless POS machine 13, wireless long-distance meter-reading concentrators (being called for short concentrator 12).
Wherein, remote meter reading and pre-payment management software are service management and the operating platform of wireless long-distance meter-reading and payment system, realize user management, the management of table tool, the various operation control functions such as management, toll administration, statistical study of checking meter; Wireless long-distance meter-reading collector, gather the metering signal of one or more telemetering meter, carry out data processing and transmission, receive host computer optimum configurations and control command, and according to the electronic installation of program setting logical OR PC control order control table meter valve event; Wireless long-distance meter-reading concentrator, carries out data acquisition, storage, transmission to multiple collector, and forwards the control command of host computer or the electronic installation of optimum configurations order to collector; Wireless POS machine, can count with remote meter reading and pre-payment management workstation, concentrator and showing the portable mobile wireless that collector carries out exchanges data and check meter and controlling equipment; Telecommunication middleware, is in charge of the signal procedure of GPRS telecommunication between the outer remote such as system and concentrator data terminal, and carried out isolation and bridge joint to front-end application and database, database security is high.
Concrete, wireless POS machine be in wireless long-distance meter-reading and payment system (abbreviation remote transmitting system) for closely with RF communication mode to multiple collector (water yield that collector uses for gathering user, or amount of natural gas) carry out data acquisition, storage, and send to collector check meter, inquire about, the portable electric device of optimum configurations or manipulation command signal, and complete the system of these functions, be exactly that wireless POS is checked meter and control system.
But during use, wireless POS machine is when transmission data or instruction, and sometimes owing to needing the data of transmission long, wherein one or more bytes occur that the probability of error code is higher, and then cause the whole bag packet loss problem of packet.
Summary of the invention
In view of this, the object of the embodiment of the present invention is the handheld POS machine system being provided for radio meter register, to reduce the probability of the POS transmission packet packet loss for radio meter register.
First aspect, embodiments provides the handheld POS machine system for radio meter register, comprising:
First length judge module, for judging whether the length of packet to be sent is greater than default standard length, carries default instruction in described packet to be sent, and/or data;
If packet segmentation module being judged as YES of the first length judge module, be then multiple subdata bags according to the partitioning scheme preset by described band transmission packet segmentation, and the length of each described subdata bag is all no more than default standard length;
Wireless sending module, for being sent to the same network terminal by multiple described subdata bag respectively.
In conjunction with first aspect, embodiments provide the first possible embodiment of first aspect, wherein, also comprise encrypting module, for the data in the data in described packet to be sent or described subdata bag are encrypted.
In conjunction with first aspect, embodiments provide the embodiment that the second of first aspect is possible, wherein, also comprise:
Wireless receiving module, can receive packet for obtaining;
Second length judge module, for judging whether the described length that can receive packet is greater than default standard length;
First memory module, if described second length judge module is judged as NO, and can receives in packet and carry meter reading data, then be stored in default database by the described packet that receives;
Second memory module, if described second length judge module is judged as NO, and can receives in packet and carry steering order, be then stored in default instruction database by the described packet that receives.
In conjunction with first aspect, embodiments provide the third possible embodiment of first aspect, wherein, also comprise: back-up storage module, for by described database, and/or the storage content in instruction database is stored in standby database.
In conjunction with first aspect, embodiments provide the 4th kind of possible embodiment of first aspect, wherein, also comprise: user's enquiry module of checking meter, if get meter reading instruction, then in customer data base, inquiring about according to user profile entrained in described meter reading instruction the state of checking meter is the user profile of not checking meter of not checking meter;
Meter reading instruction sending module, for being sent to the opposite end module of not checking meter corresponding to user profile by default meter reading instruction.
In conjunction with first aspect, embodiments provide the 5th kind of possible embodiment of first aspect, wherein, also comprise:
Check meter status indication module, the meter reading data bag that opposite end sends if get, then according to identification code entrained in described meter reading data bag, be revised as the User Status corresponding to described identification code and check meter in described customer data base.
In conjunction with first aspect, embodiments provide the 6th kind of possible embodiment of first aspect, wherein, also comprise: authentication module, with judge to get whether log in password identical with the standard cipher preset;
Instruction acquisition module, if described authentication module is judged as YES, then generates meter reading instruction according to the input instruction got.
In conjunction with first aspect, embodiments provide the 7th kind of possible embodiment of first aspect, wherein, described instruction acquisition module also comprises touch-screen input unit, and the gesture instruction for getting according to touch-screen generates corresponding meter reading instruction.
In conjunction with first aspect, embodiments provide the 8th kind of possible embodiment of first aspect, wherein, described touch-screen input unit comprises meter reading instruction generative circuit, generates corresponding meter reading instruction for the gesture instruction got according to touch screen screen edge place.
In conjunction with first aspect, embodiments provide the 9th kind of possible embodiment of first aspect, wherein, also comprise: reminder-data of checking meter generation module, if do not receive amr message in the schedule time after default meter reading instruction is sent to the opposite end module of not checking meter corresponding to user profile, then generate reminder-data bag according to user profile of not checking meter;
Reporting module, for being sent to host computer by described reminder-data bag.
The handheld POS machine system for radio meter register that the embodiment of the present invention provides, adopt Data Segmentation mode, with of the prior art due to POS of checking meter carry out the transmission of data and instruction time, because data packet length is long, and cause the loss that the whole bag of packet easily occurs to be compared, it is by identifying the length of packet to be sent, judge the length of this packet, because packet is longer, its packet loss is higher, and then need packet long for data length to cut, be divided into multiple subdata bag to send, even if some subdata bags there occurs the situation of packet loss, only need retransmit this subdata bag, also the data receiver of other parts of packet can not be affected, thus reduce the packet loss of whole packet, improve communication quality.
For making above-mentioned purpose of the present invention, feature and advantage become apparent, preferred embodiment cited below particularly, and coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present invention, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows the system architecture diagram of radio meter register wireless long-distance meter-reading and payment system in correlation technique;
Fig. 2 shows the handheld POS machine system basic module figure for radio meter register that the embodiment of the present invention provides;
Fig. 3 shows the handheld POS machine system storage system module map for radio meter register that the embodiment of the present invention provides.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.The assembly of the embodiment of the present invention describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiments of the invention provided in the accompanying drawings and the claimed scope of the present invention of not intended to be limiting, but selected embodiment of the present invention is only represented.Based on embodiments of the invention, the every other embodiment that those skilled in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Embodiments provide the handheld POS machine system for radio meter register, as shown in Figure 2, comprise as lower module:
First length judge module 101, for judging whether the length of packet to be sent is greater than default standard length, carries default instruction in described packet to be sent, and/or data;
If first length judge module 102 being judged as YES of the first length judge module 101, be then multiple subdata bags according to the partitioning scheme preset by described band transmission packet segmentation, and the length of each described subdata bag is all no more than default standard length;
Wireless sending module 103, for being sent to the same network terminal by multiple described subdata bag respectively.
Wireless kilowatt meter reading-out system when in use, collector is placed in each user family, and its effect mainly contains two, and one is that Real-time Collection table counts, and according to predetermined time interval, or when receiving steering order, the table collected is counted and be sent to concentrator; Two is the steering orders according to concentrator, or the steering order of other host computers realizes the control (as opened and closed) to valve.The effect of concentrator carries out data interaction with collector, and to enable collector carry out corresponding action according to the corresponding steering order of concentrator, concrete action is as checked meter, uploading meter reading data, valve-off and Open valve etc.Wireless POS with concentrator or collector carry out data/commands mutual in, when especially meter reading data being sent to concentrator, the length due to packet is not a constant numerical value, sometimes shorter, sometimes longer.When packet is longer time, wherein one or more bytes occur that the probability of error code is also higher, and then can cause the problem of the whole packet loss of packet.In view of this, by identifying that the length of packet to be sent judges whether the length of this packet reaches critical numerical value (default standard length), if reach critical numerical value, then can packet to be sent be cut usage data cutting unit, to ensure that the length of each packet sent is less, thus reduce the drop probabilities of the whole bag of packet.
It should be noted that, the standard length preset can be modified according to the requirement of user, different standard lengths can be set in different operating environments, ensure when packet loss is reduced, reduce the segmentation times of same data segment, thus the power consumption of the system of guarantee is a lower level.When carrying out Data Segmentation, if length is the statistics of 27 bytes, standard length is 10 bytes.Can divide according to the form of 10,10,7, also can divide according to the form of 9,9,9, these two kinds of partitioning schemes the former be convenient to the segmentation of data, the latter more lays particular emphasis on the lifting of data reliability.
After subdata bag is generated, need these subdata bags to be sent to the opposite end of specifying (as concentrator by wireless sending module 103, the webserver), because these subdata Bao Jun are formed by same packet segmentation to be sent, namely each subdata Bao Jun is a part for packet to be sent, also a part for implication expressed by packet to be sent can only just be represented, therefore, (network terminal is herein as the opposite end of indication in above to need the whole subdata Bao Jun by packet segmentation to be sent to be sent to the same network terminal, it can be concentrator, the webserver etc.).
Concrete, after obtaining subdata bag, can add identification code in each subdata bag, the position that this identification code can wrap in packet to be sent according to subdata is determined.So that opposite end can assemble smoothly after receiving multiple subdata bag, and can by adding identification code, opposite end conveniently can be determined that the subdata corresponding to which identification code contracts out and show problem, to determine the subdata bag needing to resend.
Further, packet is split, to a certain extent, can improve data security, but still not.In view of this, the handheld POS machine system for radio meter register provided by the present invention, also comprises: encrypting module, for the data in the data in described packet to be sent or described subdata bag being encrypted.During encryption, the code in each subdata bag or each packet to be sent can be encrypted, as can asymmetric encryption techniques be used, to improve the security of data.Or the data in packet to be sent/subdata bag are recombinated according to predetermined rule, to improve security further, after the packet of opposite end after receiving encryption, be decrypted according to set rule and can obtain the desired command content expressed in packet, or data content.
Except when Packet Generation, the probability of the whole bag packet loss of packet can be reduced by the mode of packet segmentation.Packet also when transmission packet, can cut by opposite end in advance, is that the data length of each packet after cutting is all less than default standard length, being that this locality effectively can identify whether this packet is effective packet.Concrete, the handheld POS machine system for radio meter register provided by the present invention, as shown in Figure 3, also comprises:
Wireless receiving module 201, can receive packet for obtaining;
Second length judge module 202, for judging whether the described length that can receive packet is greater than default standard length;
First memory module 203, if described second length judge module 202 is judged as NO, and can receives in packet and carry meter reading data, then be stored in default database by the described packet that receives;
Second memory module 204, if described second length judge module 202 is judged as NO, and can receives in packet and carry steering order, be then stored in default instruction database by the described packet that receives.
Wireless receiving to module after getting the packet that opposite end sends, can judge whether this packet meets predetermined rule according to the length of packet, if do not meet predetermined rule, be likely then the hostile network attack behavior of external network end, now then should do not process accordingly this packet.The packet not meeting length requirement can be selected directly to abandon, also can carry out alert process.When the length that the second length judge module 202 judges to receive packet is the requirement meeting default standard length, then illustrate that this packet is normal operable packet, now can process accordingly according to content entrained in this packet.As, the data of carrying in packet or instruction can be stored in corresponding thesaurus, so that follow-up use.Also can be directly data processed, and process accordingly according to the instruction preset and forward, also can be according to steering order to host computer, or slave computer sends corresponding instruction.
Electronic product work in as run into external interference, or therein circuit is aging, then likely can crash, or the phenomenon of similar termination work, time in order to avoid there is the situation of this kind, system suffers the loss of data, even if the mode of real-time storage can be adopted guarantee the situation occurring crashing, handheld POS machine system for radio meter register provided by the present invention can provide enough data, namely for the handheld POS machine system of radio meter register, also comprise: back-up storage module, for by described database, and/or the storage content in instruction database is stored in standby database.
It should be noted that, back-up storage module can have two kinds of backup modes, and the first is that the mode at interval to schedule stores, as stored once at interval of 2 hours; Further, the time interval storing data can be revised according to the difference of the difference of festivals or holidays, present period, as stored once every 1 hour when daytime, when night, then can store once for every 4 hours, and then when ensure that data can effectively back up, the energy consumption of equipment also can be made lower.The second carries out according to data volume the mode that stores, now can a data volume logging modle be set, for receiving all data volumes (also can be understood as the data volume that wireless receiving module 201 receives data) be sent in local handheld POS machine, when the data volume received by local handheld POS machine reaches certain quantity time, then can notify back-up storage module work, carry out the storage of instruction or data.Certainly, no matter be which kind of data backup mode, all can by user according to concrete operating mode from Row sum-equal matrix.
When needs are checked meter, user has two states, the first state has completed to check meter, another kind of state not yet completes to check meter, now should according to the record case in the customer data base in local POS, the user not carrying out checking meter is selected to check meter, to prevent unnecessary energy consumption.
The namely handheld POS machine system for radio meter register provided by the present invention, also comprises:
Check meter user's enquiry module, if get meter reading instruction, then in customer data base, inquiring about according to user profile entrained in described meter reading instruction the state of checking meter is the user profile of not checking meter of not checking meter;
Meter reading instruction sending module, for being sent to the opposite end module of not checking meter corresponding to user profile by default meter reading instruction.
Concrete, if only have personal code work in table-look-up instruction, also user code (this address refers to the network address of collector in user family) can be determined by the inquiry mode of default personal code work and station address.When personal code work and station address more time, can carry out relevance coupling by the mode setting up list in advance, the mode as mated by Hash accelerates to determine the process of station address.
Corresponding, except checking meter, user's enquiry module can query subscriber database, and also need use to check meter state table meter module to revise customer data base, namely the handheld POS machine system for radio meter register provided by the present invention also comprises:
Check meter status indication module, the meter reading data bag that opposite end sends if get, then according to identification code entrained in described meter reading data bag, be revised as the User Status corresponding to described identification code and check meter in described customer data base.
After completing and checking meter, by state table meter module amendment customer data base of checking meter, then can prevent the situation repeating to check meter.
In order to ensure the security of the handheld POS machine system for radio meter register provided by the present invention, the identity also tackling user before using the handheld POS machine system being used for radio meter register is verified, to ensure only having specific user can use this POS.Namely the handheld POS machine system for radio meter register provided by the present invention, also comprises: authentication module, with judge to get whether log in password identical with the standard cipher preset;
Instruction acquisition module, if described authentication module is judged as YES, then generates meter reading instruction according to the input instruction got.
Wherein, the mode of password authentification can be multiple, as numerical ciphers, gesture password etc.Concrete, described instruction acquisition module also comprises touch-screen input unit, and the gesture instruction for getting according to touch-screen generates corresponding meter reading instruction.
Can work as time user is input to specific gesture by password authentification, also just can input corresponding gesture instruction by touch-screen input unit.
Further, described touch-screen input unit comprises meter reading instruction generative circuit, generates corresponding meter reading instruction for the gesture instruction got according to touch screen screen edge place.
Usually, traditional touch-screen equipment is that the identification of dependence to complicated gesture is to improve security when identifying.But the requirement of gesture identification to equipment except complexity is higher (mainly accuracy of identification and matching precision), can by arranging the gesture identification portion specified in the edge of touch-screen equipment, making only can by checking when touch screen edge inputs the instruction of specifying.And gesture identification function setting can be convenient to user's operation at touch screen edge, and can raising security to a certain extent.
Further, handheld POS machine system for radio meter register provided by the present invention, also comprise: reminder-data of checking meter generation module, if do not receive amr message in the schedule time after default meter reading instruction is sent to the opposite end module of not checking meter corresponding to user profile, then generate reminder-data bag according to user profile of not checking meter;
Reporting module, for being sent to host computer by described reminder-data bag.
Namely after have sent meter reading instruction, when not receiving the meter reading data of feedback in the regular hour, then illustrate that user (actual refer to the collector arranged in user family) is in abnomal condition, after now being reported by reporting module, relevant administrative authority should check.
Certainly, user can check by inputting corresponding instruction the status information of tabling look-up stored in customer data base, also can check the amr message in other database.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (10)
1., for the handheld POS machine system of radio meter register, it is characterized in that, comprising:
First length judge module, for judging whether the length of packet to be sent is greater than default standard length, carries default instruction in described packet to be sent, and/or data;
If packet segmentation module being judged as YES of the first length judge module, be then multiple subdata bags according to the partitioning scheme preset by described band transmission packet segmentation, and the length of each described subdata bag is all no more than default standard length;
Wireless sending module, for being sent to the same network terminal by multiple described subdata bag respectively.
2. the handheld POS machine system for radio meter register according to claim 1, is characterized in that, also comprise: encrypting module, for the data in the data in described packet to be sent or described subdata bag being encrypted.
3. the handheld POS machine system for radio meter register according to claim 1, is characterized in that, also comprise:
Wireless receiving module, can receive packet for obtaining;
Second length judge module, for judging whether the described length that can receive packet is greater than default standard length;
First memory module, if described second length judge module is judged as NO, and can receives in packet and carry meter reading data, then be stored in default database by the described packet that receives;
Second memory module, if described second length judge module is judged as NO, and can receives in packet and carry steering order, be then stored in default instruction database by the described packet that receives.
4. the handheld POS machine system for radio meter register according to claim 3, is characterized in that, also comprise: back-up storage module, and for by described database, and/or the storage content in instruction database is stored in standby database.
5. the handheld POS machine system for radio meter register according to claim 1, is characterized in that, also comprise:
Check meter user's enquiry module, if get meter reading instruction, then in customer data base, inquiring about according to user profile entrained in described meter reading instruction the state of checking meter is the user profile of not checking meter of not checking meter;
Meter reading instruction sending module, for being sent to the opposite end module of not checking meter corresponding to user profile by default meter reading instruction.
6. the handheld POS machine system for radio meter register according to claim 5, is characterized in that, also comprise:
Check meter status indication module, the meter reading data bag that opposite end sends if get, then according to identification code entrained in described meter reading data bag, be revised as the User Status corresponding to described identification code and check meter in described customer data base.
7. the handheld POS machine system for radio meter register according to claim 5, is characterized in that, also comprise: authentication module, with judge to get whether log in password identical with the standard cipher preset;
Instruction acquisition module, if described authentication module is judged as YES, then generates meter reading instruction according to the input instruction got.
8. the handheld POS machine system for radio meter register according to claim 7, it is characterized in that, described instruction acquisition module also comprises touch-screen input unit, and the gesture instruction for getting according to touch-screen generates corresponding meter reading instruction.
9. the handheld POS machine system for radio meter register according to claim 8, is characterized in that, described touch-screen input unit comprises meter reading instruction generative circuit, generates corresponding meter reading instruction for the gesture instruction got according to touch screen screen edge place.
10. the handheld POS machine system for radio meter register according to claim 5, it is characterized in that, also comprise: reminder-data of checking meter generation module, if do not receive amr message in the schedule time after default meter reading instruction is sent to the opposite end module of not checking meter corresponding to user profile, then generate reminder-data bag according to user profile of not checking meter;
Reporting module, for being sent to host computer by described reminder-data bag.
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| CN104574706B (en) | 2016-10-05 |
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